Posterior Leg Muscles

Question 1

Biceps femoris

Answer 1

ORIGIN: ischial tuberosity
INSERTION: head of fibula
ACTION: Extend the hip and flex the knee

Question 2

Semitendinosus

Answer 2

ORIGIN: ischial tuberosity
INSERTION: medial side of tibia
ACTION: Extend the hip and flex the knee

Question 3

Semimembranosus

Answer 3

ORIGIN: ischial tuberosity
INSERTION: medial condyle of tibia
ACTION: Extend the hip and flex the knee

Question 4

Gluteus maximus

Answer 4

ORIGIN: dorsal ilium and sacrum
INSERTION: gluteal tuberosity
ACTION: Extends hip

Question 5

Gluteus medius

Answer 5

ORIGIN: lateral surface of ilium
INSERTION: greater trochanter
ACTION: Abducts hip

Question 6

Piriformis

Answer 6

ORIGIN: anterior sacrum
INSERTION: greater trochanter
ACTION: Laterally rotates the hip

Question 7

Gastrocnemius

Answer 7

ORIGIN: medial and lateral condyles of femur
INSERTION: calcaneus
ACTION: Plantar flexion

Question 8

Soleus

Answer 8

ORIGIN: proximal tibia and fibula
INSERTION: calcaneus
ACTION: Plantar flexion

Question 9

Fibularis longus

Answer 9

ORIGIN: head of fibula
INSERTION: 1st metatarsal, 1st cuneiform
ACTION: Plantar flexion, eversion